840486 divided by 51 
Our goal is to divide 840486 by 51.

Let's proceed to step 1:
If we divide 8 by 51, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (4) of the dividend behind the 8 and repeat the process: 84 / 51

Moving on to step 2:
The number 51 fits into 84 1 times, leaving a remainder of 33.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 51 away from 84, we end up with 33.
Grab the next digit (0) from the dividend, add it to 33, then carry on: 330 / 51

Let's proceed to step 3:
51 goes into 330 6 times with a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 16.0
Deduct 306 from 330 and we're left with 24.
Grab the next digit (4) from the dividend, add it to 24, then carry on: 244 / 51

Let's proceed to step 4:
The number 51 fits into 244 4 times, leaving a remainder of 40.
Write down 4 as next digit of the result. 
Result so far: 164.0
If we take 204 away from 244, we end up with 40.
Append the next digit (8) from the dividend to 40 and continue with: 408 / 51

Moving on to step 5:
51 goes into 408 8 times with a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 1648.0
If we take 408 away from 408, we end up with 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 51

Step 6:
When dividing 6 by 51, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 16480.0
Subtracting 0 from 6 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 7:
When dividing 60 by 51, we get 1 with a remainder of 9.
The next digit of our result is 1. 
Result so far: 16480.1
The remainder is 9 after subtracting 51 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 8:
When dividing 90 by 51, we get 1 with a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 16480.11
If we subtract 51 from 90, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

In conclusion, the division gives 16480.11 with a balance of 0.039.